Sorry guys but I just don't get enthused about the supercharging deal. If the numbers are already close with the 6.1 in there then the way I see it is if they want a Gt 500 killer just drop in the 6.4 and be done with it. I'm just an all motor kinda thinker. The more add ons the more can go wrong. There's no replacement for displacement! Not trying to rain on your parade, continue on. I still find the subject fascinating.